Bykenhulle, originally known as Ivy Hall, is a historic house located on Bykenhulle Road near the hamlet of Hopewell Junction, New York, United States, in the Town of East Fishkill. It is a wooden house in the Greek Revival architectural style. They renovated and restored the house with the intent of preserving its historic character. It retains enough despite the much newer residential construction around it that, in 1991, it and two of its outbuildings were listed on the National Register of Historic Places. Currently it is used as a bed and breakfast.